Flutter UI Widgets

Nov 9 2021 · Dart 2.14, Flutter 2.5, VS Code 1.61

Part 1: Flutter UI Widgets

15. Adapt Designs Based on Platforms

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Notes: 15. Adapt Designs Based on Platforms

Where to Go From Here: Flutter Widgets Catalog

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We’ve covered both material and cupertino based widgets. Sometimes, we might want to show a widget based on the platform. Flutter offers us a way to manually check for the platform our app is running on. We can then use this information and adapt our designs based on the underlying platform.

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';

class PlatformSpinner extends StatelessWidget {
  const PlatformSpinner({Key? key}) : super(key: key);

  Widget build(BuildContext context) {
    final isIOS = Theme.of(context).platform == TargetPlatform.iOS;
    return Center(
      child: isIOS
          ? const CupertinoActivityIndicator()
          : const CircularProgressIndicator(),
return Center(child: PlatformSpinner());
// Remove the isIOS boolean member
  Widget build(BuildContext context) {
    bool isIOS = Theme.of(context).platform == TargetPlatform.iOS;
    if (isIOS) {